| article html file updated | 6 February 2020 07:26 CET | Update | https://www.mdpi.com/2072-6643/6/2/881 |
| article html file updated | 20 September 2019 06:04 CEST | Update | N/A |
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| article html file updated | 21 March 2019 12:45 CET | Update | N/A |
| article html file updated | 19 August 2015 21:22 CEST | Update | N/A |
| article html file updated | 18 March 2014 09:56 CET | Original file | N/A |
| article xml file uploaded | 18 March 2014 09:56 CET | Original file | https://www.mdpi.com/2072-6643/6/2/881/xml |
| article pdf uploaded. | 21 February 2014 14:07 CET | Version of Record | https://www.mdpi.com/2072-6643/6/2/881/pdf |
